Heat radiator



United States Patent [72] Inventors Klas Joel Wilhelm Svensson Varberg; Karl Eric Oskar Tapper, Ed, Sweden [21] Appl. No. 765,491 [22] Filed Oct. 7, 1968 [45] Patented Nov. 17, 1970 [73] Assignee Priemus-Sievert AB,

Sundbyberg, Sweden a corporation of Sweden [32] Priority Oct. 19,1967 [33] Sweden [3 l 14,321/67 [54] HEAT RADIATOR 3 Claims, 2 Drawing Figs.

[52] US. Cl. 126/92,

431/343 [51] Int. Cl F23d 13/12 [50] Field of Search 126/92,

92RC, 92B, 93; 43 H328, 329, 343, 344

[56] References Cited UNITED STATES PATENTS 3,139,879 7/1964 Bauer et a1 126/92BX 3,179,156 4/1965 Weiss et al... 126/92X 3,229,680 1/1966 Hebert et a1. 126/923 Primary Examiner-Charles J. Myhre Attorney-B. Edward Shlesinger ABSTRACT: A heat radiator is disclosed. The radiator includes a container, a burner member with reflector mounted on the container, and a casing for the container. The container is rotatably mounted in the casing to adjust the direction in which heat is to be radiated from the reflector.

Patented Nov. 17, 1970 Sheet:

INVENTORS KLAS JOEL WILHELM SVENSSON KARL ERIC OSKAR TAPPER Patentefl Nav. 1, 19?

Sheei i of 2 INVENTORS KLAS JQEL WLHELM SVENSSON KARL ERIC OSKAR TAPPER HEAT RADIATOR This invention relates to a heat radiator. More particularly this invention relates to a heat radiator of the type comprising a container or receptacle for fuel in liquid state mounted in a stand and a burner member with a cupshaped reflector supported by said fuel container, heat being produced in the burner member and radiated by means of the reflector in a main direction determined by the central line of said reflector. It is known to make the reflector adjustable in order to vary the inclination of said direction relatively to the horizontal plane.

It is one main object ofthe invention to provide a radiator of said type which is exceptionally cheap in manufacture and which in spite thereof satisfies all requirements which are to befulfilled by heat radiators with respect to the adjustability of the direction of heat radiation. According to one main feature of the invention the stand has a casing which fits to the form of the container and within which the container is rotatable about an axis which is inclined relatively to the horizontal plane and which at the same time forms an angle with the centerline of the reflection. Due to this mounting of the container the joint between the same and the burner member with its reflector can be rigid, so that articulate joint members through which the fuel is fed and which are relatively expensive, are not required.

Further objects and advantages of the invention will become apparent from the following description considered in connection with the accompanying drawings which form part of this specification and in which:

FIGS. 1 and 2 are perspective views of a heat radiator constructed in accordance with the invention and represented in two positions of adjustment.

Referring to the drawings, reference numeral generally denotes a stand which is composed of a casing 12 and a foot 14. The casing 12 has generallythe form of an open longish sleeve of sheet plate which at its bottom has two tubular, bent projections 16 into which the end portions of'the foot I4 are introduced. One such tubular projection 16 is mounted on each of the opposed longitudinal edges of the casing 12. The foot 14 is made of a wire having resilient properties and composed of a supporting portion 18, which is bent twice and which rests on a supporting surface, its two ends 20 being symmetrically bent upwardly and introduced into the tubular pro- 1 jections 16.

The longitudinal axis 19 of the casing 12 takes an inclined position in relation to the horizontal plane, the angle of inclination determined in the vertical symmetrical plane of the stand varying between 70 and 80 and preferably being about 75.

A generally cylindrical container or receptacle 22 within which fuel such as butane or propane is stored in liquid state, is positioned within the only slightly resilient casing 12, the longitudinal axis of the container coinciding with the inclined longitudinal axis 19 of the casing. The container 22 may to advantage be constituted by a throw-away package which thus is discarded when empty. A nipple 24 is provided on the top of the container, a pipe leading from said nipple to the burner 26 provided with an incandescent gauze and in known manner constructed so as automatically to open a valve in the container 22 when being attached thereto by screwing. The nipple 24 is secured onto the container without any articulate connection.

The nipple 24 and the burner 26 constitute a unit together with a holder 28 which around the burner 26 merges into a reflector 30 having a shining, cup-shaped inner surface which radiates the produced heat in a main direction coinciding with the centerline through the holder 28, the burner 26 and the reflector 30. The open side of the reflector is protected by a screen 32. Thecenterline 25 forms an angle to the longitudinal axis 19 of the container 22 which angle may be equal with the angle of inclination of the container in relation to the horizontal plane when the reflector takes the position shown in FIG. 1.

The container 22 is rotatable about its longitudinal axis within the casing 12, while being retained in every desired angular position by the friction against the casing and the resilient force existent in the foot 14. Provided on the base portion of the casing 12 are stoppers 34 which limit the movement of the container in downward direction but permit the rotation thereof. When adjusting the burner member 26, 28 and the reflector 30 according to FIG. 1, their central line 25 is located in the vertical symmetrical plane of the stand 10. This central line then occupies the lowest angular position relative the horizontal plane and the reflector then can emit the heat produced by the burner 26 in a main direction which is parallel to the horizontal plane or forms a little angle onlyin upward or downward direction-in relation thereto. If it is now desired to increase the angle of radiation in relation to the horizontal plane, the burner member and the reflector are rotated as a unit together with the container 22 in the casing 12. Thereby the central line 25 of the reflector increases its inclination to the horizontal plane and reaches a maximum value as shown in FIG. 2, when the centerline is displaced by 180 in relation to FIG. 1. Between these end positions each desired inclination of the reflector can be brought about solely by rotating the same and the container 22 within the casing 12.

The casing 12 has not an exact circular cross section but is provided with suitably a plurality of longitudinal folds 36 which result in that interspaces extending from end to end are formed between the cylindrical container 22 and the casing 12. These interspaces have for its object to permit a circulation of warm air from the burner to said interspaces in order thereby to supply heat to the interior of the container and to counteract the cooling which is a result of the transition from the-liquid into the gaseous state of the fuel content in the container. This is particularly valuable when the fuel is constituted by butane which at atmospheric pressure boils at 0C. The evaporation of the butane can be reduced considerably and even cease completely if no heat is supplied to the container in the manner envisaged.

In some casesthe fuel can be constituted by benzene which is liquid at normal room temperature.

While one more or less specific embodiment of the invention has been shown and described, it is to be understood that this is for purpose of illustration only, and that the invention is not to be limited thereby, but its scope is to be determined by the appended claims.

We claim:

I. A heat radiator comprising:

a stand having a foot portion, and a casing open at opposite ends, and supported on said foot portion with its axis inclined to the vertical;

stop means on said casing projecting transversely into the lower, open end thereof; g

a cylindrical container for fuel rotatably mounted in said casing coaxially thereof with the lower end of said container seated against said stop means;

a burner member supported on said container and having a cup-shaped reflector, the axis of which is inclined to the axis of said casing; and

said casing having an axial length to extend for the greater part of the axial length of said container, 50' that a major portion of the peripheral surface of said container is in frictional engagement with the inner surface of said casing, whereby said container when rotatably adjusted into different angular positions about the axis of said casing to adjust the direction in which heat is to be radiated from said reflector, will be held in its adjusted position. v

2. A heat radiator as defined in claim 1, wherein:

said casing is inclined at an angle of 70 to to the horizontal and comprises a resilient, segmental, generally sleeve-shaped member having spaced, parallel, axially extending marginal edges; and

said stop means comprises a lateral projection formed on said sleeve-shaped member and extending transversely into the lower, open end thereof to engage said container to limit the downward movement of said container in said casing.

3. A heat radiator as defined in claim 1, wherein said con- 

